Primary aim of this study is to analyse contemporary labor patterns by measuring rate of dilatation and head descent via transperineal ultrasonography. Labor curves will be generated using data regarding rate of dilatation, head-descent obtained via transperineal ultrasonography. Factors which are known to effect duration of labor will be taken into account.
Intrapartum sonography is rapidly advancing field in the management of obstetrics labor. Traditional approach to labor management consists evaluation of cervical dilatation, head position and head descent via digital examinations. Rate of progress is evaluated using data of available labor curves. Unsatisfactory progression is either treated with labor augmentation or cesarean section depending on the degree and duration of labor retardation. Transperineal ultrasonography is able to assess cervical dilatation, fetal head descent and head position. Data obtained from analysis of labor via transperineal ultrasonography is not available. This research's primary aim is to generate labor curves using data obtained via ultrasonographic measurements.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Masking
NONE
Enrollment
1,000
Assessment of cervical dilatation, angle of progression and head position via transperineal ultrasonography
Assessment of strength of uterine contractions (Montevideo units) and fetal heart rate (beat per minute) with electronic monitors.
Artificial rupture of membranes to assess meconium staining and induce labor speed.
Ankara University Faculty of Medicine, Department of Obstetrics and Gynecology
Ankara, Turkey (Türkiye)
RECRUITINGDuration of active labor
Duration of active labor will be calculated in minutes, in a reverse fashion, beginning from time of birth and going back to first time of measurement.
Time frame: From time of initial admission until the time of birth, up to 36 hours
Rate of cervical dilatation advancement as measured by transperineal ultrasonography
Rate of cervical dilatation assessment will be measured in millimetres/hour in a reverse fashion beginning from the time when maximum dilatation is achieved and going back to time of first measurement.
Time frame: From time of initial admission until the time of birth, up to 36 hours
Rate of angle of progression advancement as measured by transperineal ultrasonography
Rate of angle of progression advancement will be measured in metric degree in a reverse fashion beginning from the last measurement taken and going back to first measurement taken.
Time frame: From time of initial admission until the time of birth, up to 36 hours
Effect of amniotomy on duration of active labor
Effect of amniotomy on the duration of labor will be assessed in minutes by analysing the different time points in different labor processes when amniotomy has taken place.
Time frame: From time of initial admission until the time of birth, up to 36 hours
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Administration of meperidine for labor analgesia.
Oxytocin infusion for augmentation of labor.
Oxytocin infusion for induction of labor.
Administration of dinoprostone pessary for cervical ripening and labor induction.